Dairy Industry Overview. Management Practices Critical Control Points Diseases
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1 Dairy Industry Overview Management Practices Critical Control Points Diseases
2 Instructor Contact Information: Hans Coetzee Office: I-107 I FAH&M Building Phone: jcoetzee@vet.ksu.edu
3 Definitions Lactation: Period of time milk is produced Dry Period: Period between end of lactation and calving Transition Period: 30 days before calving to 30 days after calving DIM: Days in milk DMI: Dry matter Intake Heat: Estrus AI: Artificial Insemination Services: Matings (usually AI events) Days Open: Days not Pregnant ADG: Average Daily Gain Fresh Cow: Recently calved cow TMR: Total Mixed Ration
4 General Introduction
5 Beef vs Dairy
6
7 It s s a Dairy Cow s s Life Birth Milk Feeding 6 8 weeks Group Housing Heat Detection AI months Transition 23 months Transition 60 day Dry period Dry-Off 305 days Post calving PD days Post-AI Heat Detection and AI days Post-calving Milking Transition Calving 1 st -24 mo Ideal- 365 d
8 Critical Control Points Risk of Death Risk of Culling Interventions Birth Milk Feeding 6 8 weeks Group Housing Heat Detection AI months Transition 23 months Transition 60 day Dry period Dry-Off 305 days Post calving PD days Post-AI Heat Detection and AI days Post-calving Milking Transition Calving 1 st -24 mo Ideal- 365 d
9 Birth Dystocia (difficult birth) Especially first calf heifers Fetal oversize (genetics) Fetal malpositions (next slide) Uterine inertia (Ca 2+ deficiency) Obstructive dystocia (fat/ dilation/torsion) Dystocia impacts milk yield/ days open/ services per conception/ cow deaths Direct Cost up to $380/ case (Dematawena and Berger, JDS, 1996) sdystocia.htm
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11 Critical Control Points Prevention: GENETICS: Calving ease sire for heifers NUTRITION: Heifers 60% of mature AI Fat calving = milk fever Fat cows = obstructive dystocia Intervention (Education): Lack of progress Fetal Malpositions Distress: fetal/ maternal Work Cleanly/ Use lube/ disinfectant Know your limits
12 Birth to Weaning 8 10% calves die before weaning (Goal < 5%) Diarrhea= 60% of deaths 25 30% Incidence Infection/ Nutrition/ Stress Rota Virus: : 3 21 days Corona Virus: : 5 21 days E. coli: : < 5 days old Cryptosporidium: : 1 3 weeks Cl. perfringens type C: < 2 weeks Salmonella: : > 10 days Respiratory disease from poor ventilation
13 Critical Control Points Colostrum Feeding (65%) -> > 1 gallon within first 6 hours Pooled Colostrum (colostrumeter) older vaccinated cows Pasteurized Johnes/ Mycoplasma/ / EBL Serum TP > 5.2 mg/dl OR ZST test FPT = 2X Mortality Rate Hygiene (30%) Clean and Dry Good Ventilation Vaccination (5%) Respiratory D x : IBR/ BRSV/ PI3 Intranasal- Maternal Ab/ / Immature DOES NOT SUBSTITUTE FPT
14 Weaning to Breeding Only % expected deaths after weaning 50% of deaths due to respiratory disease Calves achieve 50% of adult height by 6 months of age Must ensure adequate rumen development: Roughage! Must ensure adequate growth rate: 1.8 lbs/day Breed at 55 60% mature BW 85% mature BW
15 Critical Control Points Management Practices for Dairy Replacement Heifers Practice Dehorning Removing extra teats Disinfect navel Freeze brand Brucellosis Clostridial Diseases Leptospirosis (5 strain) IBR PI-3 BVD Breeding Age 4-10 days 2-6 weeks immediately after birth 4-6 months Vaccinations: Decline in maternal Ab and maturing immune system 2-6 months 2-6 months 9-12 months 8-14 months 8-14 months 8-14 months months Booster no yes annually annually annually annually
16 Heat Detection BEHAVIOR: Alert, restless/ bawling/ shortened feeding time/ aggressive:- butting/ withholding milk/ increased urination/ mounting other cows/ / chin pressing on other cows sniffing/ licking of vulva/ lip curling EXTERNAL GENITALIA: : swollen, reddened vulva/ mucus discharge
17 Critical Control Points Visual detection: 20 min 1x/ day observation 60% heats 2x / day observation 3x/day observation 80% heats 90% heats 4x/ day observation 100% heats Pedometers Cows in estrus more active Tail Paint KAMAR Heat detector Bovine Beacon Teaser Bulls (Gomer( Bull)
18 Estrus Synchronization
19 Artificial insemination
20 Artificial insemination
21 Critical Control Points Cow in estrus Reproductive Health Disease Free Optimal body weight Fertile Bull Calving Ease High Genetic Merit Disease Free Semen Storage Liquid Nitrogen (-196( 196 C) Semen Identification Correct Handling Clean Equipment minutes Training and practice!! Be Gentle: Avoid force 2-step process Deposit semen just through cervix Adequate restraint Work cleanly Work Gently Take your time Thaw Semen 33 C C to 35 C C (95 F) s Avoid Cold Shock
22 Pregnancy Diagnosis Days Post AI Day Method Milk Progesterone Day Ultrasound Day Rectal Palpation > Day 72 Estrone Sulfate blood test
23 Pregnancy Diagnosis Day 37 Day 45 Day 50 Day 70
24 Transition 30 Days 30 Days Good transition essential for cow to reach potential Crucial: Minerals AND Intake (Energy) Impact disease prevention Newborn calf Fresh cow Vaccinations/ Foot Trimming/ Diet changes/ Udder Protection
25 Critical Control Point: Newborn Calf Health Vaccinate pregnant cows 2 injections 2 weeks apart at least weeks before calving Rota/ Corona/ Cl. perfringens/ E. coli Ensure calves receive 1 gallon colostrum in first 6 hours Passive transfer of colostral antibodies and local gut protection Hygiene at calving: Prevent Johnes Disease
26 Recap Risk of Death Risk of Culling Interventions Birth Milk Feeding 6 8 weeks Group Housing Heat Detection AI months Transition 23 months Transition 60 day Dry period Dry-Off 305 days Post calving PD days Post-AI Heat Detection and AI days Post-calving Milking Transition Calving 1 st -24 mo Ideal- 365 d
27
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